织女星网格路由器的应用与改进

资源发现是网格(grid)需要解决的一个核心问题．织女星(Vega)网格提出了一种完全分布式的资源发现机制：网格路由器，它以类似IP路由器的方式进行工作．为了体现网格路由器的特点及提供使用案例，设计和实现了一种基于网格的在线游戏服务平台，称为织女星游戏网格．针对网格路由器在该应用中出现的问题，对网格路由器进行了如下改进：基于UDP协议实现资源请求路由转发协议；通过IP协议测量网格路由器之间的物理网络距离；资源无需手工注册到网格路由器上即可被发现；基于图的遍历算法，对于SD-RT算法进行了改进．

Application and Improvement of Vega Grid Router

Resource discovery is one of the core problems to be solved in the grid.Vega grid suggests a fully distributed resource discovery mechanism: grid router, which works similar to IP router.In order to demonstrate the benefit of grid router and provide a use case, a grid-based online game service platform, called Vega game grid, is designed and implemented.Considering the problems that occurr in the application of grid router, the grid router is improved, including implementing resource request and transfer protocol with UDP protocol, enabling the measurement of the physical network distance between grid routers with IP protocol, discovering resources without their being manually registered on grid router,and improving the SD-RT algorithm with the graph traverse algorithm.